people who believe in Hinduism believe in the caste system. The caste system is a social structure for society. You aren't allowed to interact with people in different classes. There is very limited social mobility.
Hinduism is a polytheistic religion. This means that they believe in many gods. Some gods are, Brahma, the creator. Another is Saraswati, goddess of knowledge, music, and the arts.
The salt march
The salt march was a peaceful protest. It was led by Gandhi. He led people to the sea to get their own salt for themselves. They were sick of having to buy it from the British when the could just get it themselves.
Great Britain imperialized India. They did this because they wanted India's natural recourses. India had many things like, opium and spices. Britain did not have many natural recourses for themselves so imperializing India gave them the recourses they needed.